Atmosphere purifying device



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COO'QOOOCO Filed Nov. 13,4 1944 E COHN ATMOSPHERE PURIFYING DEVICE EN Nw Dec. 26, 1950 Patented Dec. 26V, 1950 FAT NT FFICE ATMOSPHERE FURIFYING DEVICE` Eugene Cohn, Chicago, Ill. Application November 13, 1944, Serial No. 563,254

Claims. 1

My invention relates to appliances for purifying the atmosphere in Wash rooms, dressing rooms and like places, and `more particularly to the device patented by me on April 2.5, 1944, under No. 2,347,591, and the present improvement has for its main object to accelerate the action of the unit which produces the air currents in volved in the atmosphere purifying process and so procure a greater diiusion of the purifying medium.

A further object` is to provide an actuating unit for the rotary ian in the patented device which imparts a fast spinning motion to the same in contrast with the relatively slow motion and few revolutions formerly obtained.

Another object is to provide an actuating unit which is of far simpler construction than the patented one, representing a substantial saving oi labor and materials in the production of the appliance.

With the above objects in View and any others which may suggest themselves from the description to follow, a better understanding of the invention may be had by reference to the accompanying drawing, in which- Fig. 1 is a view similar to Fig. 2 in the patent referred to in vertical section and partly broken away;

Fig. 2 is a section on the line 2-2 of Fig. 1, indicating the actuating unit in different positions;

Fig. 3 is a section similar to Fig. l of a modiied bearing for the actuating unit; and

Fig. l is a right-hand end view of Fig. 3,

Referring specifically to the drawing, it may be said that the general form of the device is the same as that in the patent, reference numerals for corresponding parts being repcated. However, the fan shaft 35 is now extended from its frontal ball bearing 35 in a rearward direction to receive additional support in a ball bearing 8B carried by the rear end wall of the body. Also, a supplemental chamber 8| back of the housing lil serves in the manner of the former screw cap Il to support the housing I0 from the bracket l5.

In the novel embodiment the rear end of the fan shaft 35 receives a wheel 82 of solid steel construction, the wheel having a milled periphery, as indicated at 83. The wheel may be driven fast on the shaft or made with a hub 84 to receive a pin 85 driven into or through the shaft. The wheel is thus an integral part of the fan shaft.

The drive of the fan shaft in the improved `right and left in Fig. 2.

device is not co-axial, as in the patented one, but along a course. parallel tothe shaft. 35. Thus, the rod 4i which leads from the door connection liti in the patent now enters the housing at a lower point than before, first. passing through holes 53 and lili in the bracket l and chamber 8i, respectively. In the chamber the rod passes; through an oblong slot in a. cap nut ill` screwed on the rear end of a tube The latter isfreelyrotatable in a tubular bearing 8.9. carried by the. rear wall of the housing it.; and the tube 88` also foi-Ins a guide for the rod lll,

The rod kil is of iiat stock, as before, but only has a partial twist 9i! for the purpose of the present improvement, such twist cooperating with the slotted cap nut 8'! to impart a partial turn to thelsame on the longitudinal travel of the` rod. Thus, Fig. l shows that the twist 90 is on the inside of the tube 88', and it follows that when` the rod is drawn outwardly, it will impart the rotary movement mentioned to the cap nut.

rIhe cap nut is preferably of hexagonal form,

as sho-wn, although it may be of any other form which wil-l; allow it to present a flat surface in one direction. Such suracelforms thelbasis. for the projection of a coil spring 9| in a radial direction, the bottom coil 92 of the spring being deposited on a washer 93 and secured to the cap nut through the washer by means of a screw 94.

The spring 9| is shown in side elevation in Fig. l, although its normal position is not upright but almost horizontal as indicated at the The vertical position of the spring makes it clear that the topmost coil of the same is fashioned into a cross-bar 95 which is parallel to the milling 83 of the wheel 82. Thus, when the cap nut Si is turned counterclockwise from the position in Fig. 2, it carries the spring 9! from the full-line position in the direction of the arrows in the same figure first to a point where the cross bar 95 of the spring intercepts the milled periphery of the wheel 82. The motion of the cap nut forces the spring to ex back as indicated by dotted lines :in the center of Fig. 2, so that the cross bar takes a grip on the wheel and imposes a turning influence on the same as the spring passes under the wheel and eventually reaches the dotted line position in the left-hand portion of Fig. 2. When this action is rapid, the impulse imparted by the spring to the wheel 82 is forceful and causes the wheel to spin a number of revolutions. Since the wheel is solid and the fan 34 at the opposite end of the shaft 35 also has a certain amount of weight, the momentum of the wheel and the fan operates to extend the rotation of the fan, so that the latter spins a considerable number of revolutions. It is understood that the action just explained also occurs on the return motion of the cap nut 8l as induced by the reverse travel of the rod 4l.

Figs. 3 and 4 show a modification wherein the tube t8 serves as the cap nut 8l insofar as its driven function is concerned. Thus, instead of having a cap nut with a slot for the rod ill, the front end of the tube 88 is simply flattened as indicated at 96 to. create the oblong passage for the rod 4|. In the rst case, the ring 91 secured by a set-screw 98 is provided to check the tube 88 from rearward deviation, but opposed pins 99 may be provided in the modification of Figs. 3 and 4 to serve the same purpose. The rod 4l has a stop pin IUD at its front end for the same purpose.

It will be evident from the above description that I have provided a simplification of the previous device by locating the actuating unit for the fan outside of its axial zone. Besides, the said .unit not only imparts rotation to the fan, but does so With a flipping action equally effective in either direction to impose a rapid spinning motion to the wheel 82 which runs the fan faster and several revolutions longer than in the prevous case. Clearly, this action of the fan will have a more forceful engagement with the surface of eiect on the purifying agent to project and diffuse a larger quantity of vapor therefrom, materially increasing the eiiciency of the appliance. Finally, it will be evident that the parts involved in the improved appliance are of simple design and do not involve more than ordinary skill to produce, so that the appliance may be inexpensively manufactured.

While I have described the improved appliance along specific lines, various minor changes or reinements may be made therein without departing from its principle, and I desire to consider such changes and refinements as coming within the scope and spirit of the appended claims.

I claim:

1. 'l'he combination with a carrier for a substance from which a volatile agent may be drawn by the passage of air currents, and a support for the carrier journaling the spindle of a rotary fan designed to create such current; of means to impart a, sudden rotary impulse to said spindle comprising a wheel mounted on the latter and having a roughened periphery, a flat rod parallel to the spindle and longitudinally slidable in the support, the rod having a twisted portion, a member journaled in the support and having a narrow central receptacle through which the rod is slidable and which induces the member to take a partial turn when said twisted portion passes through the receptacle, and a radial projection from Said member designed to engage said Wheel with wiping pressure when the member takes said turn, the departure of the projection from the wheel inducing said impulse.

2. The structure of claim 1, said projection being yieldable.

3. The structure of claim 1, said projection being a, coil spring.

4. The structure of claim 1, the periphery of said wheel being milled, and said projection having a terminal cross-bar adapted to seat in a milling groove on engagement with the wheel.

5. The structure of claim 1, the periphery of said wheel being milled, and said projection being a coil spring terminating with a cross-bar parallel to the milling on said periphery, and adapted to seat in a milling groove on engagement with the wheel.

EUGENE COI-IN.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS 

